Can four people listen at different volumes?

Yes. Each of the four outputs has its own volume knob, so one loud and one quiet listener can share the same source.

Does it work with 3.5mm headphones?

Only with adapters. All outputs are 1/4-inch (6.35mm) jacks, so phone and earbud plugs need a 3.5mm-to-1/4-inch adapter.

Will it drive high-impedance headphones?

Not well. Output is about 40 mW into 100 ohms, so 250-ohm and higher headphones will play quietly; low-impedance models are the better match.

The amplifier and a 12V DC 500mA power adapter. Headphones and cables are not included.

How does it compare with the Behringer HA400?

It is the same four-channel design with the same specs and layout. The differences are cosmetic, plus the gold-plated jacks on this version.

Can each channel take a different source?

No. All four channels share one stereo input, so everyone hears the same mix.

Where is the HA400 4-Channel Headphone Amplifier cheapest?

At Walmart, for $16.24, as of our latest check.

What do buyers say about the HA400 4-Channel Headphone Amplifier?

Rated 5 out of 5 from 2 ratings.

Unbranded

HA400 4-Channel Headphone Amplifier

Best price now

$16.24at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Unbranded

HA400 4-Channel Headphone Amplifier

Best price now

$16.24at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $16.24 at Walmart on Nov 9.

Our take on the HA400 4-Channel Headphone Amplifier

The HA400 is a tiny metal 4-channel stereo headphone amp that splits one input to four listeners, each with their own volume knob. It is a rebadged version of the widely sold Behringer MicroAMP HA400, so it shares that unit's strengths and limits: simple, quiet, and cheap-feeling. It suits small studios, bands tracking together, podcast and gaming setups that need more headphone outs than the interface has. Rivals like the Behringer HA400 and Mackie HM-4 do the same job; this one adds gold-plated 1/4-inch jacks but no per-channel mute or mono switch.

Best forHome recordists sharing one interface outputBands tracking or practicing with several headphonesPodcast and streaming setups with multiple hostsGaming or streaming desks needing extra headphone outs

Pros

Four independent volume knobs, one per listener
Compact metal chassis, roughly 10 x 6 x 3.5 cm
Standard 1/4-inch jacks on input and all four outputs
Low noise and low distortion at normal listening levels
12V power adapter included

Cons

1/4-inch jacks only; 3.5mm headphones need adapters
No per-channel mute, mono switch or balance control
Modest output power, so high-impedance headphones play quietly
Shared input means all four hear the same source
No brand support or documentation beyond the basics

HA400 4-Channel Headphone Amplifier prices at every store

WalmartNew
In stockSold by RK Electronics Co.LtdReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$16.24Free shippingChecked Nov 9
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What reviewers say

Owners of this HA400 design, sold under several names, call it a cheap and reliable way to add four headphone outs. Most praise the independent knobs and quiet operation; complaints center on the plastic-feeling knobs, limited power for high-impedance cans, and the lack of 3.5mm jacks.

What people mention

Volume controlPraisedEach listener gets their own knob, which owners say is the main reason to buy it.
BuildMixedThe metal case is liked, but the knobs are described as light and plasticky.
Output powerCriticisedOwners of high-impedance headphones say it cannot drive them loud enough.
ConnectorsMixedGold-plated 1/4-inch jacks are fine for studio gear, but 3.5mm headphones need adapters.
NoisePraisedReviewers report low hiss and clean sound at normal listening levels.

About the HA400 4-Channel Headphone Amplifier

The HA400 is an ultra-compact 4-channel stereo headphone amplifier. It lets up to four people monitor audio at the same time from a single source. Each channel has its own volume knob, so every listener can set their own level without affecting the others.

The amplifier has a metal chassis. It delivers stereo sound with low noise and minimal distortion. It connects to mixers, sound cards, instruments, PCs, phones and speakers through gold-plated 1/4" (6.35 mm) jacks. It can be used for studio monitoring, home recording, band practice and gaming setups.

Channels: 4, each with an independent volume knob
Connector type: 1/4" (6.35 mm) TS, stereo, gold-plated jacks
Max input level: +15 dBu
Max output level: Approx. 40 mW into 100 Ω
Power supply: External 12V DC / 500mA adapter
Dimensions: Approx. 10 × 6 × 3.5 cm (3.9 × 2.4 × 1.4 in)
Weight: Approx. 0.18 kg
Housing: Metal chassis
Color: Silver
In the box: HA400 amplifier, 12V power adapter

Specifications

size: 10 x 6 x 3.5 cmSource
color: SilverSource

Questions and answers

Can four people listen at different volumes?: Yes. Each of the four outputs has its own volume knob, so one loud and one quiet listener can share the same source.
Does it work with 3.5mm headphones?: Only with adapters. All outputs are 1/4-inch (6.35mm) jacks, so phone and earbud plugs need a 3.5mm-to-1/4-inch adapter.
Will it drive high-impedance headphones?: Not well. Output is about 40 mW into 100 ohms, so 250-ohm and higher headphones will play quietly; low-impedance models are the better match.
What is in the box?: The amplifier and a 12V DC 500mA power adapter. Headphones and cables are not included.
How does it compare with the Behringer HA400?: It is the same four-channel design with the same specs and layout. The differences are cosmetic, plus the gold-plated jacks on this version.
Can each channel take a different source?: No. All four channels share one stereo input, so everyone hears the same mix.
Where is the HA400 4-Channel Headphone Amplifier cheapest?: At Walmart, for $16.24, as of our latest check.
What do buyers say about the HA400 4-Channel Headphone Amplifier?: Rated 5 out of 5 from 2 ratings.